哈尔乌素露天矿剥离工艺系统的优化

应用露天矿剥离工艺优化选择模型，优化准格尔矿区二期即将开发的哈尔乌素露天矿表土和岩石剥离工艺。通过研究认为哈尔乌素露天矿中部60m左右的岩石剥离最佳开采工艺是采用单斗一汽车-破碎机-胶带-排土机半连续系统，表土及上下部岩石的剥离宜采用单斗-汽车间断工艺系统。     

大型露天矿松软物料剥离半连续工艺系统研究

连续和半连续开采工艺的应用是世界现代露天矿山发展的主要趋势。依据我国露天矿田赋存特点及我国国情,讨论了一种新型的半连续工艺：单斗铲－转载车－脱带输送机工艺,并研究其在我国大型露天矿的应用前景。     

主成分分析法在露天矿半连续运输系统中的应用

根据统计学中的主成分因素分析法原理，通过建立模型对某露天矿半连续运输系统中的各子系统生产状况进行了对比分析，得出了各子系统生产状况优劣排序，为露天矿的优化设计和生产管理提供了依据。     

露天矿半连续工艺技术应用现状及发展前景

介绍了露天矿半连续工艺技术国内外应用现状、研究成果以及发展趋势。     

霍林河露天矿输送系统可靠度分析研究

该矿半连续运煤系统是一并串联的混合系统，在计算其可靠性时用数字方法和数字仿真方法，分别按硬性连接和软性连接进行计算。数学方法实用准确；数字仿真方法对大型复杂运输系统方便快捷。通过输送系统可靠度的计算，可掌握其可靠性现状，从而提出系统管理措施，提高系统生产能力。     

我国露天矿运输的现状与评价

当前在我国露天矿中,以使用铁路运输、汽车运输和平峒溜井的较多,用斜坡提升机运输者次之,只有少数露天矿开始使用胶带输送机运输。我国深露天矿的运输方式,应逐渐改用以胶带输送机为主的联合运输,对开采中硬以上矿岩的矿山,即用“汽车(或 前装机)—破碎机—胶带输送机—排土机(或选矿广)”的运输方式,加上运输前的工序,即构成所谓的半连续开采工艺系统。随着我国露天矿逐渐采向深部,此种运输方式将得     

近十几年来缓倾斜露天矿设备概况及发展

本文综述了近十几年来,世界上缓倾斜露天矿采矿设备的使用及发展概况,列举了部分典型矿山的实例。根据不同的采运设备,概述了不同的使用条件及开采方法,并重点介绍了前端式装载机及连续或半连续运输系统。     

露天矿采用掩埋巷道运输方式的探讨

针对我国露天煤矿特点，为克服传统运煤方式的缺点，探讨了掩埋巷道运煤方式．具体介绍了掩埋巷道支架外载的确定、载重卡车对掩埋巷道受力的影响、掩埋巷道结构设计、运煤系统布置及其技术经济分析。研究表明，该运煤方式给露天煤矿开发创造了新的前景．     

我国露天矿应用半连续开采工艺的现状与前景

介绍了半连续开采工艺在我国露天矿山的应用现状和特点,分析了采用该工艺的必要性,展望了半连续开采工艺的发展趋势,为加速发展我国露天矿山半连续开采工艺而提出几项建议。     

喷雾湿式除尘在露天矿潜孔钻机作业中的应用

喷雾湿式除尘在露天矿潜孔钻机作业中的应用孙福（内蒙古商都县化工材料厂）露天矿采场环境空气污染物主要是粉尘，潜孔钻机作业是粉尘主要产生源之一。因此，改善露天矿作业环境的主要任务之一，也就是治理潜孔钻机作业产生的粉尘。内蒙商都化工材料厂石灰石矿是一个中型...     

Hydrometallurgy Wastewater Split-Up by Fluidized-Bed Ion-Exchange Continuous Equipment

ABSTRACT

A proposed operation of a semicontinuous fluidized-bed ion-exchange system was studied. The system splits a liquid current into two currents, one being more concentrated and the other more depleted. This operating technique has been used to split up a mixture of alkaline ions (Na⁺, K⁺) using a strongly acidic resin. The equipment operates simultaneously in two multistage columns, one for loading and the other for elution of the resin. The experimetal testing system employs a hydrometallurgy wastewater containing cobalt and copper as heavy metallic ions, and the resin used was of the chelating iminodiacetic type, Lewatit TP-207. At cyclic steady state, the equipment can split up the wastewater, producing an effluent concentrated in cobalt in the outlet stream of the loading column, and a concentrated stream of copper in the effluent of the elution column. The hydrodynamics and approach to the stationary state of the system were analyzed, and the selective recovery of metals was subsequently tested experimentally. This behavior presents certain similarities with a parametric pumping operation of the system, with the two columns operating at different pH values or temperatures.     

Effects of Semicontinuous and Batch System Ozonation on Wheat and Corn Starches

Wheat starch-water and corn starch-water suspensions (10%; w/w) were exposed to ozone gas by using two different contact systems; semicontinuous and batch systems. In semicontinuous contact mode, fresh ozone was applied to starch suspensions at a concentration of 4.2 mg dissolved ozone L^?1 water for 30 min, while in closed batch contact mode, starch suspensions were stirred with ozone gas at a rate of 60 g/h for 30 min. Gelatinization temperatures and enthalpies of wheat and corn starch were increased in a semicontinuous system. However, no change was observed for the gelatinization characteristics of starch samples ozonated- in batch system. Structures and birefringences of wheat and corn starch ozonated in both semicontinuous and batch operations were not differentiated clearly. Higher lightness and whiteness values were observed for both wheat and corn starch ozonated in semicontinuous system than the controls and ozonated samples in batch system. Corn starch ozonated in semicontinuous system has lower chroma and yellowness values than the others. Total color difference for the samples ozonated in semicontinuous system is significantly different from the samples ozonated in batch system. Semicontinuous ozonation system is more effective on the thermal and color properties of wheat and corn starches than the batch ozonation system.     

5万t/a离子膜烧碱装置试车及运行情况总结

齐鲁石化股份有限公司氯碱厂引进意大利迪诺拉公司5万t/a离子膜法烧碱装置,顺利完成72h性能考核交付生产,1年来生产状况良好,产品质量稳定,工艺技术指标始终控制在最佳状态。介绍了试车过程中引进装置、国内配套装置存在的问题及解决办法。尤其详细介绍了开停车情况,盐水过滤系统、树脂塔、淡盐水脱氯系统及电解槽运行情况;提出要严格控制进槽盐水质量,加强对离子膜电槽的运行管理,认真学习离子膜法制碱技术,以确保离子膜电解槽安全稳定运行。     

用ZCYS振动机组实现井下运输自动化

ZCYS振动机组由JZC型振动出矿机、YZY型振动运输机和YZS型振动筛分机三种振动机组成。用ZCYS振动机组装备的试验采场,实现了出矿和运输的连续流水作业。本文介绍了正在研究的皮带运输机、振动运输机和管道水力输送三种地下矿巷道自动化运输系统,讨论了它们的优缺点及应用条件。     

Performance of the model BelAZ-540 dump trucks in the quarries of the Semiluk Plant

Conclusions The use of large-capacity dump trucks in quarries provided with roadways constructed of low-density yielding overburden rock is advantageous from the economic and operation standpoints.Large-capacity dump trucks are more suitable than other forms of haulage during the development work on new quarries. This was demonstrated during the work on the new Belyi Kolodets quarry.Quarry roadways built from yielding rock strictly in conformity with the design specifications and maintained in a normal state are fully suitable for haulage operations with large-capacity dump trucks.To maximize the efficiency of the dump trucks used in quarries the establishment concerned must have at its disposal a truck maintenance station equipped with all necessary modern facilities and capable of handling the required amount of work.Translated from Ogneupory, No. 1, pp. 34–36, January, 1976.     

大型矿粉立磨设备在线监测系统的开发与应用

为了保障大型立磨设备的安全运行,需要对设备的过负荷状况和实时状态进行监测。本文采用先进的DALOGS-550监测系统,该系统将振动信号分析、扭矩信号监测和矿渣粉生产过程中积累的大量现场工艺数据有效结合起来,能够最大限度地避免在生产中可能发生的设备故障,以减少设备损坏带来的经济损失。     

Study on physical properties of poly(vinyl acetate) emulsion films obtained in batchwise and in semicontinuous systems

Emulsion polymerization of vinyl acetate was carried out batchwisely or semicontinuously in the presence of a nonionic surfactant or poly(vinyl alcohol) (PVA). From the investigation of degrees of polymerization of poly(vinyl acetate) (PVA_c) during the course of polymerization and those of corresponding hydrolyzed PVA, it was clarified that the degrees of polymerization of the batchwise system are much larger than those of the semicontinuous system, and long branches and shorter branches are formed in the batchwise and the semicontinuous systems, respectively. The emulsion films obtained batchwisely had properties with better tensile strengths by two to four times (nonionic system) and 1.5 times (PVA system) than those obtained semicontinuously. The former films revealed a better water-resistant nature compared with the latter films. © 1993 John Wiley & Sons, Inc.     

Refining of oils and fats

The technique of continuous refining of oils and fats has steadily improved since the first commercial installation some 30 years ago. Refining is the most important economic factor in the overall processing of an oil from the crude to the finished product. Crude oil handling, reagent selection, mixing, heating, and centrifugal separation are all critical when an attempt is made to obtain the maximum refining efficiency. The agronomist, scientist, control laboratory and operating personnel, along with the equipment manufacturers, have all aided in obtaining more efficient and economical processing methods. In a discussion of the over-all refining process, soapstock handling must also be considered. In recent years several successful continuous soapstock acidulation plants have been installed. With this addition to a refinery, the refining operation can now truly be considered as a continuous process. Like most industrial processes, this has been an evolution from the batch system to a semicontinuous system up to the present continuous treatment of soapstock and wash water to produce a high-purity acid oil on an economical basis. Details of the various factors in refining and aeidulation on a commercial basis, along with control methods, are discussed. Presented at the AOCS Short Course, “Processing Quality Control of Fats and Oils,” East Lansing, Mich., Aug. 29–Sept. 1, 1966.     

Semicontinuous Discharge of Non‐Newtonian Filter Cakes in Electrofiltration

A novel mode of operation for electrofiltration is presented. The newly developed operation procedure allows for cake removal without disassembling the chamber. Highly viscous filter cakes are discharged from the filtration chamber by inserting air which permits a rapid restart of the process. The cleaning time could be reduced from about 10 min to a few seconds. The semicontinuous operation is liable to full automation and allows for cake discharge and filtration in a short period of time. In successive cycles was proved that the process efficiency is maintained using the same membrane. A fully continuous system can be accomplished by assembling several units in parallel in a single filtration press.